TW579484B - Method of measuring the movement of an input device and device using the method - Google Patents

Abstract

An optical input device for an apparatus, generating input signals by moving the device and an object (15) relative to each other and measuring the movement by means of the effects of self-mixing in a diode laser (3, 5) and Doppler shift caused by the movement. For each measuring axis (X, Y, Z) radiation from a diode laser (3, 5) is converged on a window (12) across which the object (15) moves part of the radiation scattered by the object, whose frequency is Doppler-shifted due to the movement, re-enters the laser cavity (20) and causes a change in cavity properties. By measuring such a change, for example by means of a photo diode, information about the movement is obtained. As the input device is small and cheap, it can be used in a number of different consumer apparatus.

Description

579484 Description of the invention The invention relates to a method for measuring the movement of an input device and an object in relation to each other along at least one measuring axis, the method comprising the following steps:-using a measuring laser beam for each measuring axis to illuminate a The surface of the object, and " converts the radiation of a selected portion of the measurement beam reflected by the surface of the object into an electrical signal, the electrical signal representing movement along the measurement axis. The present invention also relates to an input device 'having an optical module for implementing the method, and to a device including the input device. -One such method and input device is known from European patent application number EP-A 0 942 285. The input device may be an optical mouse used in a computer structure to move a cursor on a computer display or monitor, such as the function of selecting a display menu. This optical mouse can be moved by a finger on a mouse pad ’just like a traditional mechanical mouse. As described in EP-A 0 942 285, the input device can also be a "reverse" optical mouse. Then, the input device can be fixed, and can be built into a keyboard of a desktop, notebook, or palmtop computer, for example, and a human finger can be moved over a transparent window of the input device housing, for example. In the latter case, the input device may be small because the optical module used to measure finger movement can be achieved with a very small volume. In fact, the 'input device can be reduced to an optical measurement module. This opens a new application method for input devices. For example, an input function can be built into a mobile phone and used as a remote control for a TV set. Functions on the menu can be selected and Internet pages can be accessed or built into a virtual pen. EP-A 0 942 285 discloses several specific embodiments of the optical measurement module. Among them, an inner difference type or a heterodyne type detection can be used. All embodiments include a diffractive grid arranged near the window of the module. The grid can be better than the paper size applicable to China National Standard (CNS) A4 specifications (210 X 297 mm)

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579484 A7 _______B7 V. Description of the invention (4) " — — In order to detect the movement direction, that is, to detect whether the object moves forward or backward along the measurement axis', the method is characterized by representing the change in the operation of the laser cavity The shape of the signal can be determined. This signal is an asymmetric signal, and an asymmetry moving forward is different from an asymmetry moving backward. In environments where it is not easy to determine the asymmetry of a self-mixing signal, it is best to use another method. The method is characterized in that the direction of movement along the at least one measurement axis is determined by supplying a laser cavity with a periodically varying current, and the first and second measurement signals are compared with each other, where the first and The second measurement signal may be generated alternately during the first half period and the second half period. The wavelength of the radiation emitted by a diode laser will increase. In this way, the frequency of this radiation will decrease and the temperature will increase. In this way, the current through the diode laser will increase. The periodic current changes through the diode laser and the re-entering of the radiation from the object into the laser cavity will cause many radiation pulses every half cycle, which will cause corresponding pulses in the measured signal. If the input device and the object do not move relative to each other, the number of signal pulses is the same as each half cycle. If the device and the object move relative to each other, the number of pulses in one half cycle is greater or less than the number of pulses in the next half cycle, which depends on the direction of movement. By comparing the measured signal during one half cycle with the signal measured during the next half cycle, the movement speed and direction can be determined. This method is further characterized in that the first and second measurement signals can be subtracted from each other. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 579484 A7 B7 V. Description of the invention The method of measuring movement is best further characterized in that it can be fine A, η _ u 』π The object and the input device move in a single movement relative to each other to perform the dry movement. 4. 1—Click action, where the axis is substantially perpendicular to the surface of the object. Moreover, this single movement will cause a Doppler change of the measurement beam radiation that is scattered and reflected from the surface of the object towards the laser cavity, so it can determine whether the movement has been measured by the laser A change in a relevant parameter of the cavity is performed. After, for example, the placement of a computer cursor, on the desired function of a display menu controlled by the 装置 _ and factory mobile measurement system of the input device, this function can be activated by the single movement in the Z-direction. The measurement method is further characterized in that it can determine a reel action and a one-click action in a first direction parallel to the surface of the object and an object and the input device in a second direction substantially perpendicular to the surface of the object relative to each other. A scroll action can be understood to indicate an up or down movement of a cursor on the menu. This action can be performed on an input device by moving a finger in a specific direction. The measurement is performed with this method along a first measurement axis parallel to the surface of the object, and a second measurement axis substantially parallel to this surface. The first measurement provides information about the scroll action, and the second measurement provides information about the click action. Alternatively, the two measuring axes may be at opposite angles relative to the surface of a typical object. The signals from the two measuring axes then contain information about the reel movement and the click action. The special scroll action information and the special one-click action information can be isolated by properly combining the two measuring action signals. The change in the operation of the laser cavity can be determined in several ways. A first specific embodiment of the measurement method is characterized by a diode laser cavity. 8-The paper size is suitable for financial standards (_ Α4 规格 (21 () X297 ^ f-

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Line 579484 A7 B7 V. Description of the invention

A preferred embodiment of the input device is characterized in that the measurement device is a radiation detector for measuring radiation emitted by a laser. The radiation detector is configured to receive a portion of the measurement beam radiation. However, this particular embodiment of the input device is best characterized in that the radiation detector is disposed on the end of the laser cavity relative to the emission end of the measurement beam. Usually'diode lasers have a monitor diode at their back end. Generally, this monitor diode can be used to stabilize the intensity of the laser beam emitted at the front end of the diode laser. According to the present invention, a monitor diode can be used to detect changes in the laser cavity caused by the radiation of the measurement beam re-entering the laser cavity. An input device that can be used to measure an object and a device's movements about each other in a plane parallel to the illuminated surface of the object. The input device is characterized in that it includes at least two diode lasers; and at least one detection Device for measuring the relative movement of the object and the device along a first and a second measurement axis, wherein the axes are parallel to the illuminated surface of the object. As will be described later, this device and others that use two or more measuring beams have a separate detector, each of which can be used to measure the beam. However, if time division is used, it can also use the same detector for all measuring beams. An input device that allows determining a third relative movement of an object and the device. The input device is characterized in that it includes 3 diode lasers and at least one detector, which can be moved along a first, a second And a third measurement axis to measure a relative movement of the object and the device, the first and second axes are parallel to the illumination surface of the object, and the third axis is substantially perpendicular to this surface. -10-

This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 579484 A7 B7 V. Description of the invention (8) This specific embodiment of the input device can be considered as an object and device along the third measurement axis A single movement of the phone, and it can be determined by a one-click action to convert it into an electrical signal. An input device that allows to determine a reel action and a one-click action is characterized in that it includes two diode lasers and at least one detector for measuring along a first measurement axis parallel to the surface of the object, and substantially perpendicular Relative movement of the object and the device with a second measuring axis on the surface of the object. — The first measuring axis can be used to determine a reel action, and the second measuring axis can be used to determine a one-click action. Alternatively, the input device is characterized in that it includes two diode lasers and at least one detector to measure the relative movement of the object and the device along the first and second measurement axes. Relative angle relative to the surface of a typical object. The signals from the two measuring axes contain information about the reel movement and the click action, and by properly combining the information of the two measuring axes, special reel action information and special click action information can be isolated. The input device has several specific embodiments related to a structural point of view. A first specific embodiment is characterized in that the optical device includes a lens disposed between the at least one laser and a shadow detector on the one hand and a related action plane on the other hand. The at least one laser is Located in the centrifugal position associated with the lens. An action plane can be understood to mean a plane where a movement can be measured, that is, where the movement occurs and the measuring beam reaches. The action plane may be a window plane of the device casing, or a plane near the window. The lens may be a revolving symmetrical lens or have another shape. Because of the -11 related to the lens element, this paper size is in accordance with Chinese National Standard (CNS) A4 specification (210 X 297 mm) 579484 A7 _____ _B7 _ V. Description of the invention (9) The laser centrifugal position can ensure corresponding lighting The light beams can be incident on the window of the device at an acute angle, so these light beams have elements along the relevant measurement axis. For the following description, the term optical axis can be quoted and understood to mean the axis of symmetry of a lens, or module, where the modes are perpendicular to the Caiwu group window. If this specific embodiment includes two diode lasers, it is characterized in that the diode laser configuration can be such that the line connecting their centers to the optical axis of the lens is substantially 90 pertaining to each other. angle. If this specific embodiment includes three diode lasers, it is characterized in that the diode lasers can be configured 'so that the lines connecting their centers to the optical axis of the lens are substantially related to each other 120. angle. The output signal of the detector can be supplied to a common signal processing circuit, wherein at least two of the detector signals can be used for each measurement axis to determine the movement along the relevant axis. In this way, more accurate movements can be obtained. In the input device, a polar body laser of the type VCSEL (vertical cavity surface emitting laser) can be used. This laser emits radiation in a vertical direction, making it suitable for the device. However, currently this laser is quite expensive and it is not suitable for consumer mass products. For this reason, an input device is characterized in that each diode laser is a horizontal emitting laser, and for each diode laser, the device includes a reflective element for The beam of the diode laser is reflected to an action plane. Horizontal-emitting diode lasers are the most commonly used lasers and are cheaper than a VCSEL. A device with a reflective element will slightly increase the device's -12- This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) — " " " " ------- -

Description of the invention Cost. A specific embodiment of an input device that is relatively easy to manufacture and low cost is characterized in that i is composed of the following; a base, in which at least one diode laser and related detectors can be installed; a cover element, which is fixed to the base , And includes a window and a lens suitable for the cover element. This specific embodiment consists of only three parts, and these parts are easy to assemble and have no alignment requirements. " An embodiment of an input device that is even easier to manufacture is characterized in that the lens can be integrated into a cover element having an inner surface, wherein the inner surface is curved toward the base. This specific embodiment consists of only two parts. These embodiments are further characterized in that the base, the lid member, and the lens are made of a plastic material. Components made from this material will be cheap and lightweight, so they are suitable for consumer products. Only the material of the lens should be transparent and have some optical qualities. That is, another specific embodiment without a lens is characterized in that each diode laser is coupled to the entrance end of a different light conductor, and the exit end is a window placed in the device. In this embodiment, the light rays of an illuminating beam can be sufficiently isolated from its environment, so crosstalk between movements along different axes can be eliminated or strongly reduced. This embodiment is characterized in that the light conductor is an optical fiber. The optical fiber is flexible and has a small cross-section. In addition, the paper size is -13- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

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k 579484 A7 B7 发明 Description of the invention (11): It will show a small attenuation, which allows a window of the device to be placed from a large distance between the diode laser and the detector. A specific embodiment using an optical fiber is characterized in that it includes 3 diode lasers and 3 light guides, and the exit end of the light guide is substantially 120 °. Are arranged in a circle at an angular interval from each other. As defined in items 27 to 33 of the scope of patent application, the input device can be used in different applications, such as a mouse for a desktop computer, a keyboard of a '&'; or laptop computer, different Device's remote control unit, mobile phone, etc. These and other aspects of the present invention can be made more apparent through non-limiting examples related to the described specific embodiments, in which: FIG. 1 a is a cross-sectional view of a first specific embodiment of a display device according to the present invention; FIG. 1 b It is a top view of the device; Figure 2 describes the principle of the measuring method of the input device; Figure 3 shows the changes in the optical frequency and gain of the laser cavity as a function of the device and the object moving each other; Figure 4 describes the measurement of this change Figure 5 shows the change in laser wavelength as a function of laser temperature for optical feedback; Figure 6 shows the impact of a laser's periodic change in drive current; Figure 7 describes how to detect the direction of movement; Figure 8 shows a diagram of an input device with three measuring axes; Figures 9a and 9b show a second specific embodiment of the input device; Figure 10 shows a third embodiment of the device; Figures 11a and lib It shows a fourth specific embodiment of this device; -14- This paper size applies to China National Standard (CNS) A4 (210X 297 mm)

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579484 A7 B7 _ V. Description of the invention (12) Figure 12 shows a mobile phone with an input device; Figure 13 shows a wireless phone with an input device; Figure 14 shows a television with an input device; Fig. 15 shows a laptop computer with an input device; Fig. 16 shows a desktop computer with an input device; Fig. 17 shows a pen with an input device; A virtual drawing pen of the device; Figure 19 shows a ultrasonic scanning device with an input device; Figures 20 and 21 show a first specific embodiment of an input device for scrolling and clicking, and Figure 2 2 A second specific embodiment of this device is shown. Figure la is a cross-sectional view of the input device. The device comprises a base 1 at the lower end, which is a carrier of a diode laser and a detector such as a photodiode, wherein the diode laser in this embodiment is a VCSEL type laser . In Figure 1a, only one diode laser 3 and its associated photodiode 4 are visible, but as shown in the top view of the device in Figure 1b, usually at least one second diode laser 5 And related detectors 6 can be provided on the base. Diode lasers 3 and 5 can emit lasers, or measurement beams 3 and 17 respectively. Above it 'the device has, for example, a transparent window 12 that spans an object i 5 that can be moved by a human finger. For example, the lens of a plano-convex lens is arranged between the diode laser and the window. This lens focuses the laser beams 13 and 17 on or near a transparent window. If an object 15 appears in this position, it can spread the light beam 13. A part of the radiation of the light beam 13 can be scattered in the direction of the illumination light beam 3, and this part can be passed through the lens 1-10 on the emitting surface of the diode laser 3 ) A4 size (21 () χ 297 public love)-579484

. The surface of the object moves in its own plane and is represented by the arrow 16 in Figure 2. Because the Doppler change only occurs when the object moves in the direction of the beam, this movement should be that it has element 16 in this direction. By this, it becomes measurable movement in an xz plane, that is, Fig. 2 plots the movement of the plane can be called X-shift. Figure 2 shows that the surface of the object has an inclined position related to the rest of the system. In fact, the measurement beam is usually an oblique beam, and the surface movement of the object occurs in the XY-plane. The γ_ direction is perpendicular to the plane plotted in FIG. 2. Movement in this direction can be measured by a second measurement beam, emitted by a second diode laser, and its scattered light can be captured by a second photodiode associated with the second diode laser. An oblique illumination beam can be obtained by centrifugally disposing a diode laser associated with the lens i 0. It is easiest to measure the intensity of the radiation on the back laser surface with a monitor diode, and to measure the change in the gain of the laser cavity caused by the movement of the object. This is the most attractive method. Traditionally, this diode can be used to maintain the fixed intensity of laser radiation, but it can also be used to measure the movement of objects. In another method of measuring the change in gain, in this way, the movement of an object that uses the intensity of the laser radiation is proportional to the number of electrons in the conduction band that is joined by the laser. This number is then inversely proportional to the box impedance. It can be determined by measuring this impedance 'object movement. A specific embodiment of this measurement method is described in FIG. 4. In this figure, the active layer of the diode laser is indicated by reference numeral 35, and the current source supplying the laser is indicated by reference numeral 36. The voltage on the diode laser is supplied to the electronic circuit 40 via a capacitor 38. The voltage that normally flows through the laser is the resistance or impedance of the laser cavity. -18-This paper uses China National Standard (CNS) A4 size (210 X 297 mm) 579484

Proportionally. The inductor 37 is connected in series with the diode laser to form a high signal impedance on the diode laser. In addition to the amount of movement ', that is, the width of the distance the object moves can be measured by calculating the time-related measurement speed, and the direction of movement must be detected. This table does not necessarily determine whether the object moves forward or backward along a moving axis. The direction of harmony can be detected by determining the shape of the signal produced by the self-mixing effect. As shown in plot 3 2 of Figure 3, this signal is an asymmetrical signal. Drawing 3 2 shows how the object 5 moves towards the laser. The ascending slope 32, is steeper than the descending slope 32 ". The description in the above literature can be found on June 20, 1992, 'Vol. 31, No. 8, page 34〇1-334. The name" Applie (i 〇ptics ', Found in' asymmetry is the opposite movement of an object away from the laser, that is, the descending slope is steeper than the rising slope. By determining the asymmetric type of self-mixing signal, the direction of the object's movement can be determined. In some cases For example, for a small reflection coefficient of the object or a large distance between the object and the diode laser, it will become difficult to determine the shape or asymmetry of the self-mixing signal. In determining the direction of movement In another preferred method, the wavelength λ that can be used by the laser radiation is determined by the temperature of the diode laser and the current passed. For example, 'if the temperature of the diode laser increases, the laser cavity's The length will increase 'and the wavelength of the amplified radiation will increase. The curve 45 in Figure 5 shows the temperature (Td) relationship of the wavelength λ of the emitted radiation. In this figure, the horizontal axis Td and the vertical axis λ are arbitrary units. As shown in Figure 6 If the period of driving is represented by drawing 50, the dynamic current I d is supplied to the diode laser, and the temperature Td of the diode laser will be as shown in drawing 5 2-19. This paper scale applies Chinese national standards (CNS) A4 size (210X 297 mm)

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k 579484 V. Description of the invention Periodic rise and fall. This will cause an optical standing wave in the laser cavity, and it will have a periodic changing frequency, so the continuously changing phase shift is related to the radiation reflected by the article, and it will re-enter the cavity after a period of time. In each half cycle of the drive current, there are currently continuous time segments, in which the diode laser gain will be higher and lower, which is due to the waveform phase relationship in the cavity and the reflected radiation that re-enters the cavity. It depends. This results in a time-dependent intensity change (I) of the emitted radiation as shown in plot 54 of Figure 6. This green map represents the case of a stationary, or non-moving object. The number of pulses in a first half period of 1 / 2P (a) is equal to the number of pulses in a second half period of 1 / 2p (b). An object's movement will cause a Doppler change of a radiating line re-entering the laser cavity, that is, 'the increase or decrease of this frequency will depend on the direction of movement. Moving objects in a forward direction reduces the wavelength of re-entry radiation, and a reverse movement increases the wavelength of radiation. The effect of the periodic frequency modulation of the light wave of the laser cavity is that the Doppler change has the same sign as the frequency modulation of the laser cavity. The Doppler change of the re-entering cavity is different from this radiation. The case where the frequency modulation has the opposite sign to the Doppler change. If the two frequency changes have the same sign, the phase difference between the waveform and the re-entry radiation change at a low rate, and the resulting modulation frequency of the laser radiation will be lower. If the two frequencies and changes have opposite signs, the phase difference between the waveform and the radiation change at a faster rate, and the resulting modulation frequency of the laser radiation will be higher. During a period of 1/2 p (a) of a first half period of the driving laser current, the wavelength of the generated laser radiation will increase. In the case of an object moving in the reverse direction, re-enter the radiation--20- This paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) 579484 A7 ____ Β7 5. The wavelength of the invention description (18) will also Increases, so the difference between the waveform frequency of the cavity and the frequency of the radiation ray reentering this cavity will be lower. In this way, the number of time segments during the re-entry of the wavelength of the radiation suitable for the generation of the radiation will be smaller than the case of electrical modulation in which no laser radiation is emitted. This means that if the object is moving backwards, the number of pulses in the first half cycle will be less than if no modulation is applied. In the second half period of l / 2p (b), the laser temperature and the wavelength of the generated radiation will decrease, and the number of time segments that re-enter the wavelength of the radiation suitable for generating the wavelength of the radiation will increase. Therefore, for a reverse moving object, the number of pulses in the first half period will be smaller than the number of pulses in the second half period. This is described in Figure 5 and Figure 8 of Figure 7. This graph shows the intensity of the laser radiation emitted if the object moves in the reverse direction. Comparing this plot with Figures 5 and 4 continued from Figure 6 shows that the number of pulses in the second half cycle decreases, and the number of pulses in the second half cycle increases. From the above inference, it is clear that if the object moves in the forward direction, the radiation wavelength of the object scattered and re-entered into the laser cavity will be reduced due to the Doppler effect. The number of pulses is larger than the number of pulses in a second half period of 1/2 p (b). This can be confirmed by comparing FIG. 7 with FIG. 56, which represents the intensity if of the light rays emitted in the case of a moving object in the forward direction. In an electronic processing circuit, the number of photodiode signal pulses counted during the second half cycle W2p (b) can be subtracted from the number of pulses counted during the first half cycle 1/2 p (a). If the resulting signal is zero, the object is stationary. If the result signal is positive, the object is moving forward, and if the signal is negative, the object is moving backward. The number of pulses is proportional to the speed of forward and reverse movement, respectively. -21-This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) '-----

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579484

In some cases, for example, if the optical path length between the laser and the object is relatively small, and the frequency and amplitude of the electrical modulation are relatively small, but the detected movement is quite fast, it will occur by Doppler The number of pulses produced by the effect is higher than the number of pulses produced by the electrical modulation. In this case, the direction of movement can still be detected by comparing the number of pulses during a first half cycle with the number of pulses during a second half cycle. However, the speed is then not proportional to the difference between these two quantities. In order to stabilize the speed in this case, the two numbers should be averaged, and two and one fixed 値 should be subtracted from the result. The quantity obtained in this way is a measure of speed. Those skilled in the art can easily design an electronic circuit to perform this calculation. A driving current of another shape such as a rectangular shape may be used instead of the triangular driving current Id for the specific embodiment shown in Figs. If the change can be determined by measuring the change in the impedance of the diode laser cavity ', the method of measuring the speed and direction of the object's movement can also be used. For example, from the standpoint of a change in the wavelength of a Doppler frequency of 100 kHz corresponding to a laser wavelength of 680 nanometers at 1,5.1 (T 1 6 meters), the measurement method requires only a small Doppler change. In a plane, the movement of objects along the two vertical lines (X and γ) or the measurement axis can be measured using the input device of Figure 1. The device includes two diode lasers and related photoelectricity in a vertical direction. Diode. Adding a third diode laser and an associated photodiode to the device allows the device to also measure movement along a third z-direction, or measuring axis. Third diode lightning The radiation is arranged on the optical axis of the lens 10, so the third illumination beam is incident perpendicularly on the window 12, and the object, and there are no components in other directions. -22 in the z-direction This paper standard applies to Chinese national standards (CNS ) Α4 size (210 X 297 mm)

Yes; 2 ::: number is then available. In order to increase the J t degree and accuracy of the χ * γ measurement signal, the three-knowledge M_u — polar body lasers are best configured in a circle, and separated by “one: the angular distance from each other. This structure is in Figure 8 shows that the polar laser and the third photoelectric: the polar body is indicated by reference numerals 7 and 8. If the output signals of the photodiodes 4, η ^ 6 and 8, or the impedance measurement signals say, respectively Expressed as S 4, S 6 and S |-6 b 8, the object speeds Vx, Vy and along the X, Υ, and Z measurement axes can be calculated, for example, as follows:-

Vx = 2 S4-S6-S8 Vy = V3. (S8-S6) Vz = 1 / V2. (S4 + S6 + S8) The electronic circuit used to perform this calculation contains addition and subtraction components, and is relatively easy to implement. Velocity 及, and the sum of the durations related to the duration of movement, the movement distances in the X and Y directions obtained in this way are more reliable and correct, because they are the average result of the output signals of at least two photodiodes. For example, a slightly raised finger movement error or unwanted movement will have a similar effect on the output signal of the photodiode. While the movement along the X_ and γ measurement axes can be determined by subtracting the output signals from each other, the effects of an unwanted movement on the X and γ measurement signals can be removed. The Z-measurement signal Vz obtained by only adding 3 photodiode output signals indicates the up / down movement of a finger or another object. A human finger movement in the Z direction and the input device related to each other can be used -23- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

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k Description of invention (21 In an application that performs a one-click function, it is sufficient to detect this movement. A correct measurement of an object change is not required, so z · The measurement may be quite thick. Even the direction of movement does not need to be detected It is almost unnecessary to set the structure or reflection coefficient of an object. The movement of the object is related to the input device. It has been shown that the relative movement of a blank sheet and the device can be easily measured. From an optical point of view, the optical module The size of the input device may be very small.-The size of the input device is mainly determined by the number of electrons that must be incorporated in the device and from the viewpoint of easy mass production. In a practical embodiment, the window has a size of 3 mm to 5 mm square Because of the measurement principle used in this device, its components do not need to be arranged correctly, which is a significant advantage for mass production. In the specific embodiment of FIG. 1, the lens 10 may be made of glass or a transparent plastic material Made of, for example, composite carbonate (PC), or composite methacrylate (PMMA). This lens can be exemplified by epoxy resin A transparent bonding layer 11 is fixed to the substrate to carry the diode laser, the photodiode, and the processing circuit. For this specific embodiment, it is assumed that the diode laser radiation is in a vertical direction, so these The laser can be of the VCSEL type. This laser can be easily placed on the substrate via a wire-binding technique. More traditional side-emitting diode lasers with a horizontal cavity can be used because they consider it cheaper. This A laser can be mounted in such a way that it radiates vertically. For example, a laser can be mounted on a small table. However, it can also be mounted in a way that it emits side-emitting diode lasers in this way. Figure 9a It is a vertical cross-sectional view of a specific embodiment of the input device with the laser, and -24- this paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 579484 A7 B7 V. Description of the invention (22) Figure 9b is a top view of the lower part of the device. In these figures, 1 is from the substrate or housing plate protruding from the electrical contact pin 62. This substrate has this heat conduction, making it function as Diode laser A cooling element. The electronic circuit shown in Figs. 1 and 8 can be mounted on a layer of silicon or another material 60, where the layer forms a circuit board. Furthermore, the embodiment of Fig. 1 includes this layer. Elements 3, 5 And 7 are side-emitting diode lasers. For each of these lasers, a reflective element 64 can be provided, and a horizontally emitting beam from the diode laser can be transmitted vertically through the lens 10 68, 70 Reflected to the top window 12 of the device. The reflective elements preferably have a spherical shape, so they also have some optical intensity, and can convert the incident split beam 6 8, 70 into an undivided, or aligned, or Even slightly focused beams. The optical intensity of the lens 10 may then be less than the optical intensity of the lens 10 in the specific embodiment of FIG. 1. Moreover, in the specific embodiment of Figs. 9a and 9b, the lens 10 may be a glass lens, but is preferably a plastic lens. A plastic lens is cheaper and lighter than a glass lens, and is very suitable for use in this application because there are no strict optical requirements in this lens setting. Preferably, a housing 66 and a housing plate 1 of the device are made of plastic and a protective cap 6 6 having a transparent window 12. Three, or two reflective elements used in only two diode lasers, can be formed by a plastic ring covered by a reflective coating. The ring may form an integral part of the base 1. The input device is then mainly composed of a plastic material, and can be composed of only 3 constituent elements that are easy to assemble. These components are: substrate 1 'which has a reflective ring; contact pins 62 and diode lasers and associated photodiodes, a lens 10, and a cap 66 with a window 12. FIG. 10 shows a preferred embodiment of the input device, in which -25-

This paper size uses the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 579484 A7 B7 5. Description of the invention (: a further integration can be implemented. In this specific embodiment, Figure 9 & protection of the specific embodiment The cap 66 and the lens 10 can be replaced by a single plastic element 70, and the lower part thereof is bent toward the substrate. The refractive effect of this curved surface on the illumination beam is the same as that of the lens 10 of Fig. 9a. Fig. 10 is specific An upper view of the lower part of the embodiment is not shown, because this part is the same as that of Figs. 9a and 9b. The specific embodiment shown in Fig. 10 consists of only two structural parts, and is more than that of Figs. 9a and 9 The specific embodiment shown in b is even easier to assemble.-In the specific embodiments shown in Figures 8, 9a, 9b, 10, 11a, and lib, the illumination beams are not focused on the plane of the window. Moreover, when these beams are removed from the substrate When emitted from different positions of the layer, the illumination beam will form illumination points at different positions in the action plane of the window plane, for example. The illumination beam and its scattered radiation are sufficient to separate in space, so according to the present invention, There is no problem in the input device between the different measurement axes. If necessary, a residual contention can be reduced by using diode lasers with slightly different wavelengths. For this purpose, a few nanometers The wavelength difference is sufficient. Another possibility to eliminate contention is to use a control drive of the diode laser, which allows only one laser to be started at any time. The circuit can then start a multiplex of different diode lasers The drive circuit can constitute this control drive. This multiplexing circuit allows two or three diode lasers to be monitored via a detector or a photodiode, where the detector or the photodiode can be configured Each of the diode lasers I is used in a time-sharing mode. An additional advantage of embodiments with such a drive circuit is that the space required by the circuit and the electrical power consumption of the device can be reduced. Figure 11 a And 11 b is a specific embodiment of the display input device, in which the lighting -26- A7 B7

579484 V. Description of the invention (24 beams can be guided to the window through the optical fiber. Figure u is a vertical section, and Figure lib is a top view of this specific embodiment. The input ends of the optical fibers 72, 73 and 74 are- The well-known methods are respectively photocoupled to the diode lasers 3, 5 and 7. All the outputs of the money are located in the window of the device. The optical fiber can be built in the hard material-the cap 78, for example, epoxy Or another transparent or non-transparent material. Each of these fibers forms a radiation isolator guided by the fiber, and both can be used to illuminate radiation from the relevant diode laser and back to the laser The spread of radiation. As a result, the possibility of crosstalk between different measurement axes is very small, or even zero. The other advantages of optical fibers are that they are flexible, and they can increase the design possibilities, and they can be transmitted at any distance. The radiation, so the diode laser and the photodiode can be configured far from the window of the input device. In the specific embodiment of Figures lu and ub, the diode laser and the related photodiode can be configured closely. Match These elements can be arranged as shown in Fig. 1a at a separate interval of 7 to 9, the interval of which can be the same material as the cap, or another material. Other light guides can be used, for example, in a body of transparent or non-transparent material Figure 8-lib The specific embodiment has two diode lasers instead of three. If the input device must measure only X and γ movements and a Z measurement, this will be used For example, it is not necessary for one-click function. Other small laser devices can be used instead of diode lasers, and other small radiation sensitive devices can replace photoelectric diodes. When the above input device can When it is manufactured at a lower cost, it is very suitable for implementation in a large number of consumer devices. Because it is very small and lightweight-27- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) )

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579484 V. Description of the invention (25 'This device can be easily integrated into existing devices, thereby increasing the capabilities of these devices without substantially increasing their cost and weight, and without changing their original design. Figure 1 2 shows A first and important application of the new input device is mobile, or cellular, telephone device 80. The faceplate of this device has a key registration part 8 2 which contains dial dial green and other functions Many button switches 83. A display device 85 is arranged on the part 82, and an antenna ^ is provided on the top surface of the telephone 80. When, for example, one! 0 keypad dials, or another command is switched from the button 8 3 During input, information about the input command can be transmitted to a telephone company's base station via a transmission circuit not shown in the telephone and antenna. Other commands entered through the push button switch can be processed in the telephone circuit to activate the telephone circuit. Functions such as selecting a specific phone number in a stored list, or sending a specific message from a form of a standard message. The device and additional circuits are provided to the telephone device to control the movement of a cursor 88 on the display device 85. Some of the active functions flb can also be performed in an easier manner, and new functions can be created. Only the input device 89 shown in FIG. Can be configured at several positions on the phone, such as below the button switch, or on either side as shown in Figure 12. The window of the input device is preferably located in one of these positions, where the fingers are usually Hold and hold the phone device. The circuit of the device can display a function menu, and a finger movement on the input window of the device 9 can move the cursor $ 8 to a specific function. Move your finger to the window in a vertical direction to activate this Function. When integrated in a mobile phone with a standard protocol such as WAP protocol or! Mode Internet protocol, the input device can provide significant advantages. Via -28- This paper standard applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm)

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579484 A7 1 B7 V. Description of the invention (26) ^ ---- This agreement allows the device to be used as &, for example, a global communication network of the Internet, ’; As this becomes more widely used, it is needed for new end-user devices. The first consideration is a television with a signal conversion box and a mobile phone. For new purposes, these devices should have a small input device that is very suitable for, for example, a television remote control unit or a mobile phone. The input device of the present invention can fully meet these needs. This input device can also be used in a wireless telephone device for the same purpose as a mobile telephone device. A radiotelephone device 90 is shown in FIG. This device is composed of a base station 92, which is connected to a telephone or wired network and a mobile device 94 'and can be used in an area less than a radius of 500 meters from the base station. The device 94 includes a key registration section 95 and a display device 97. In a manner similar to that described for a mobile telephone device, the device 94 has an input device 99 as described above. Moreover, in Fig. 13, only the view of the input device is shown. Similar to a mobile phone device, the device 94 should be small and lightweight, and the implementation of an input device in a line phone device can provide the same advantages as a mobile phone device, especially if the wireless device has For example, WAP agreement or I-mode agreement. A conventional television set 100 shown in FIG. 14 and including a receiver and display device 10 and a remote control unit 107 can be adapted to Internet communication by adding a signal conversion box 105. The signal conversion box can access the Internet through a telephone or a wired network, and converts a signal received from the Internet into a signal that can be processed by a television set to display Internet information. When a user of the TV Internet has an input device for Internet commands, this input device should be integrated in the remote control unit. According to the present invention, as before -29- this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) y / 9484 A7----______ B7 V. Description of the invention (2 ^) — " ^ 1 'A — — — The optical input device described above is £ 109 which is built into the remote control unit 1Q7. The device 109 with only a window display can be arranged between the conventional buttons of the remote control unit or any other position within the range of any human finger holding the remote control unit. The input device of the present invention can also be used in a computer structure to replace a traditional hand-driven trackball mouse or a mouse pad. FIG. 15 shows a portable computer, which is known as a notebook or laptop computer, and includes a base portion 112 and a sub-portion 115 with an LCD, .... 7F device 116. The base part is suitable for different computer modules and keyboards. In this keyboard, the configuration of the optical input device ιΐ9 of the present invention can replace the traditional mouse pad. The input device can be configured on a conventional mouse pad, or any other easily accessible location. If the input device can be used to measure in two directions—finger ㈣, so it only needs to perform the function of traditional mouse alignment, it needs to contain only two diode lasers. The use of an input device preferably includes 3 diode lasers, so it has a one-click function, so it can also replace the traditional one-click button of a notebook computer. A handheld or palmtop computer is a smaller version of a notebook computer. Moreover, according to the present invention, the palmtop computer has an optical input device, such as an edge pen instead of a touch display screen. The green pen is usually used to select a display menu function. The optical input device can be arranged on the keyboard of the palmtop computer, but it can also be arranged inside the cover. Figure 16 shows a desktop computer structure 12 in which the optical input device can be applied in several ways to replace the traditional trackball mouse. The computer structure is composed of a keyboard 121, a computer box 122, and a monitor 123. The monitor may be a flat LCD monitor fixed in a support 124 as shown, or a CRT monitor. An optical input device 129 is best integrated with a keyboard, so one point -30- This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) The mouse 126 and the cable of the computer box are no longer needed. Instead, the trackball mouse can be replaced by an optical mouse with an optical input device. The device can then be reversed; that is, the device's window is moved across the mouse. The input device can measure this movement instead of a human finger movement across the window as previously applied. Use is currently achieved by optical input devices with significant sensitivity. The device can detect movements related to a fairly smooth surface, such as a blank sheet of paper. _ In the above-mentioned computer structure, the input device may be arranged on the display part, instead of the keyboard part, such as the laptop cover 15 in FIG. 15 or the tablet of a laptop computer. In addition to computer displays, input devices can also be integrated into the display. The optical input device may also be combined with a normal pen or a virtual pen to measure the movement of the pen. In these applications, optical fibers can be used to direct radiation from a diode laser to the device's window, so the main part of the device can be located away from the pen tip. FIG. 17 shows a normal pen with a stroke 131 and a tip 132. The sleeve-shaped housing 136 of the input device is fixed at the end of the pen barrel opposite to the pen tip. The housing 136 is a diode laser, a photodiode, and an electronic circuit for the input device. The optical fibers 133,: 134 can guide radiation from a diode laser. For example, these fibers end in the middle of the pen tip and form the window of the input device. It can also configure a diode laser and a photoelectric monopole at a position far away from the pen, and transmit the radiation from the diode laser to the pen tip, and it can be transmitted back to the photodiode via an optical fiber. , One end of which is fixed to the nib. When the pen is used to write a text or draw a picture and move, move -31-This paper size applies Chinese National Standard (CNS) A4 specifications (210X 297 mm) 579484 A7 ________ B7 " 5T invention description (29 ~ & quot Can be measured, that is, following the input device, and converted into an electrical signal. This signal can be immediately transmitted to a computer via a wire 138 or wirelessly, for example. The computer can process this signal, so writing text or graphics after some time Or it can be immediately seen on the computer monitor, or transmitted to another computer or file. The edge pen can also have a device for temporarily storing the text or graphics generated by the pen. Generally, the edge pen can only move horizontally and input The device needs to contain only two diode lasers and two optical fibers. In the environment, a pen-to-vertical movement measurement is useful. For this case, the input device has a third diode laser Figure 18 is a vertical cross-sectional view of a virtual pen. This pen can be moved across characteristic paper, or it can be moved according to a necessary pattern of letters, characters, drawings, etc. The pattern can be converted into positions by the input device of the pen. These positions can be converted into virtual writing and drawing by a computer, and can be converted into letters, words or displays by the computer immediately or later, or transmitted to Another computer, or network. The virtual pen embodiment shown in FIG. 18 includes a pen housing 141 with a pen tip 142, a base plate 143 at the lower portion, and a transparent window 144 at the pen point. The lower part of the pen can fit diode lasers 3, 4, and related photodiodes 4, 6, and electronic circuits. These components can be mounted on a layer 145, which corresponds to layer 60 of Figures 9a and 10. Optical fiber 146 And 147 are light-to-diode lasers to guide the laser radiation to the window 144. For example, a solid material sleeve or sleeve 148, 149 of plastic can fix these optical fibers. For the drawing pen of FIG. 17 and For the virtual drawing pen in Figure 18, the diode laser and the photodiode can be placed at a position far away from the drawing pen. From the diode laser -32- This paper standard applies to China National Standard (CNS) A4 (210 X 297 mm) 579484 A7 _B7 1. Invention theory The radiation from Ming (3t) ~ '— can be transmitted to the pen tip' and returned to the photodiode via an optical fiber, one end of which is fixed to the pen tip. The input device of the present invention can also be used in a transmission pin and / or printed The meter device is used to detect the slippage of the paper or measure the paper advance, so the correct and expensive paper drive motor is no longer needed in this device. In addition, this input device can be used to read information on a paper A handheld scanner 'regenerates this information either immediately or later via a computer. This handheld scanner has a device to measure the movement of the scanner on the paper, so a reliable regeneration of the information becomes may. The measuring device should be small and lightweight, and the input device is very suitable for this purpose. Hand-held scanners are known in nature and need not be described here. The handheld scanner of the present invention is different from the known scanner in that it includes an input device as described above. Ultrasound imaging, or echo mapping, is a medical diagnostic technique in which ultrasound reflected by human plants and structures can be used to create an image. In addition to its entire immediate imaging possibilities, it has the advantages of non-invasive and non-ionizing, similar to competing technologies for X-ray imaging and computerized tomography (CT). This technology uses a scanning device connected to a computer. Ultrasonic systems have the additional advantage of being relatively small (even portable) and cheaper than, for example, non-invasive magnetic resonance imaging systems. In an ultrasonic scanning device, an ultrasonic wave can be generated and its waveform can be transmitted to the human body. Different types of tissue can reflect different ultrasonic waves. The reflected wave can be detected on the scanning device, and the result of this detection can be transmitted to the dead brain, so that it can be analyzed and used to create a display image. This image is a two-dimensional cross-section of the body's inter-day inspection site. Sweep the paper by moving it on the human body. Standard paper size (CNS) A4 (21G X 297 mm "-33 579484 A7 B7 V. Description of the invention (31; '~~ tracing device, other parts of this body It can be checked. The ultrasonic scanning device does not need to be described in detail here, because it is a well-known device. As shown in the diagram of FIG. 9, the input device of the present invention can be combined with an ultrasonic scanner box to record its movement. This illustration shows a scanning device 150 having an electrical environment 152 connected to a computer, wherein the computer is not shown in the drawing. When in use, the surface 154 of the device is facing the body to be examined. Reference 159 indicates that only the display is shown The input device of the window, and the recording via a device such as moving along the imaginary line 155. This input device with one or two measuring axes offers a new possibility of an ultrasonic scanner, because in addition to the two-dimensional ultrasonic image In addition, the information about the scanning forest movement can be accurately obtained and processed by the computer, so that a three-dimensional image of the body to be examined can be created later. Alternatively, the scanning device has a second input device 159 '. The input device is small and cheap, so it can be easily integrated into the existing ultrasonic scanning device without adding cost and redesigning the device. For example, the input device of a mobile phone can be used to scroll the menu An up and down scroll switch of the chart. This input device also has the ability to determine a single click, wherein the single click can launch a menu pointed by a cursor controlled by the up and down switch. This input device can easily create discontinuities Components to allow rapid new development. Figure 20 shows a first specific embodiment of a scroll and one-click input device 160. It contains two laser / diode units 161, 162, each of which contains One diode laser and one photodiode. Also, individual diode lasers and photodiodes can be used to replace this unit. Each of the radiation paths emitted by units 161 and 162 Among them, one lens 163 and 164 may be -34- This paper size applies to China® Home Standard (CNS) A4 specification (210 X 297 public love)

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Line 579484 A7 B7 V. Description of the invention (32) The lens can be configured to focus the radiation beams 165 and 166 of the relevant units 16 1 and 162 in an action plane 167, wherein the action plane can be a window plane. This window 172 may form part of the device housing 169, such as a mobile phone shown in the side view of FIG. The laser / diode unit and related lenses can also be configured so that the main rays of the beams 165 and 166 are at relative angles relative to a typical window 172, such as at + 45 ° and -45 ° angles, respectively. An object, such as a human finger 168, can be moved on a motion plane that is scrolled and / or clicked. As described above, both actions can cause a Doppler change to reflect the radiation to the laser / diode units 161 and 162 by a finger. The detector output signals from these units can be supplied to the signal processing and laser drive electronics 170. This circuit evaluates, for example, the movement of the control finger 168 and supplies information on these movements on its output 171. The laser / diode units 161 and 162, the lenses 165 and 166, the window 172, and the electronic circuit 170 and software can be integrated into one module. This module can also be placed on a mobile phone or on another device, and it should have a scroll and click function. It can also implement an input device with discontinuous elements. In particular, a part of the signal processing may be performed by a microcontroller, or other control devices that form part of a mobile phone or other devices. The other devices may be, for example, a remote control, a wireless phone, or a portable computer. As mentioned above, a movement of a finger or other object from the laser / diode unit can be detected by modulating the laser current and counting the pulses received by the detector. The output signals of these detectors are Signi * sign2, where the output # numbers represent the object speeds along the main rays of beams 165 and 166, respectively. Specification 297 mm) 579484 A7 B7 5. Description of the invention (33), the speed parallel to the window (vserQll) and the speed perpendicular to the window (veliek) can be calculated as follows:

VscroI1 = l / 2 V2. (Sign1.Sign2)

Vcllck = l / 2 V2. (Sign! + Sign2) FIG. 2 shows a second specific embodiment of a scroll and a one-click input device 180. FIG. This specific embodiment is different from FIGS. 20 and _2 1 in that the two lenses 1 $ 3 and 104 and the window 172 are replaced by a single element 182. This element can focus the two beams 165 and 166 onto the upper surface 184 forming the window. In general, if the input device of Figure 20-22 needs to provide only one scroll function, only one diode laser, lens, and detector are needed. -36-

Claims (1)

579484 A BCD Patent Application No. 090127765 Chinese Application for Patent Scope Replacement (July 1992) 6. Scope of Patent Application! A '— ----------------- ”1. A method for measuring the movement of an input device and an object related to each other along at least one measurement axis, the method It includes the following steps:-illuminating an object surface with a measurement laser beam at each measurement axis, and-converting a selected portion of the measurement beam radiation reflected by the surface into an electrical signal, where the electrical signal represents The movement of the measurement axis is characterized by the following: the measurement beam radiation line that is reflected back along the measurement beam and re-enters the laser cavity emitting the measurement beam can be selected; and The interference of the incoming radiation with the light wave and representing the movement of the laser cavity caused by the movement can be measured. 2. The method according to item 1 of the scope of patent application, characterized in that the direction of movement along the at least one measuring axis can be detected by determining a shape that represents a change in operation of the laser cavity. 3. The method according to item 1 of the scope of patent application, characterized in that the moving direction along the at least one measuring axis can be supplied by a periodically changing current to the laser cavity, and the first and the first The two measurement signals are determined in comparison with each other, wherein the first and second measurement signals may be generated during alternate first half periods and second half periods, respectively. 4. The method according to item 3 of the patent application, characterized in that the first and second measurement signals can be subtracted from each other. 5. The method according to item 丨 of the scope of patent application, characterized in that a one-click action is determined by a single-movement along an axis that is related to the object and the input device, wherein the axis is substantially perpendicular to the surface of the object. 6. The method on page 2, 3, 4, or 51 of the scope of patent application, which is characterized in that the paper size applies the Chinese National Standard (CNS) A4 specification (210x 297 mm) AB c D 1Λ 579484 6. The scope of patent application A scroll motion and a one-click motion are determined by a first direction parallel to the surface of the object, the object and the input device being related to each other, and a second direction movement substantially perpendicular to the surface of the object. 7. The method according to item 1, 2, 3, 4 or 5 of the scope of patent application, characterized in that the impedance of the diode laser cavity is measurable. 8. The method of claim 1, 2, 3, 4, or 5, characterized in that the intensity of the laser radiation is measurable. 9 · An input device having an optical module that can be used to implement the method as described in item 1 of the patent application scope, the optical module includes at least one laser, the laser has the following: a laser cavity for generating A measurement beam; an optical device 'for focusing the measurement beam in a plane close to the object; and a conversion device for converting the measurement beam reflected by the object into an electrical signal' characterized in that the conversion device is powered by the laser The combination of the cavity and the measuring device is used to measure the change in the operation of the laser cavity. This is due to the interference of the reflected measurement radiation into the laser cavity and the light wave in the laser cavity 'and represents the object. And a relative movement of the module. 10 · The input device according to item 9 of the scope of patent application, characterized in that the measuring device is a device for measuring the impedance change of the laser cavity. 1 1. The input device of item 9 in the scope of patent application, characterized in that the measuring device is a light ray detector for measuring radiation emitted by the laser. The input device of the item is characterized in that the radiation detector is arranged at the end of the laser cavity opposite to the end of the emission measurement beam 〇 1 3 · As in the scope of the patent application No. 9, [〇, n, or 12 Input device, its size of this paper is applicable to China National Standard (CNS) A4 (210 X 297 mm) 579484 A8 B8 C8 D8 The scope of patent application is characterized in that it contains at least two diode lasers and at least one detector for measuring a relative movement of an object and a device along the first and second measurement axes. The isometry axis is parallel to the illuminated surface of the object. 1 4 · If the input device in the scope of patent application No. 9, 10, ii, or 丨 2 features, it is characterized in that it contains 3 diode lasers and at least one detector for measuring along a first A second and a third measurement axis of the object and a relative movement of the device, the first and second axes are parallel to the illuminated surface of the object, and the third axis is perpendicular to this surface. 1 5 · If the input device in the scope of patent application No. 9, 10, u, or i 2 is used to determine a reel action and one-click action, it is characterized in that it contains 2 diode lasers and at least one The detector is used to measure the relative movement of the object and the device along a first measurement axis parallel to the surface of the object and along a second measurement axis substantially perpendicular to the surface of the object. 16 · If the input device in the scope of patent application No. 9, i 〇, n, or 丨 2 is used to determine a reel action and one-click action, it is characterized in that it contains 2 diode lasers and at least one Detectors for measuring relative movement of objects and devices along first and second measurement axes, where the measurement axes are at opposite angles relative to the surface of a typical object. 1 7 · If the input device of the scope of patent application No. 9, 10, 11 or 12 is characterized in that the optical device includes the at least one laser and a related detector on one side, and the other A lens disposed between an action plane of the aspect and the at least one laser is located at an offset position related to the lens. 1 8 · If the input device in the scope of patent application No. 17 contains 2 diode lasers, it is characterized by the lines configured with these diode lasers so that their center is connected to the optical axis of the lens They are essentially 90 to each other. angle. This paper size applies to China National Standard (CNS) A4 specifications (21 × 297 public love) 579484 A8 B8 C8 D8 6. The scope of patent application 19 • If the input device of scope 17 of the patent application contains 3 diode lasers, it is characterized by the configuration of these diode lasers so that their center and lens optics The lines connecting the axes are substantially equal to each other. angle. 2 0. If the input device of the scope of patent application No. 9, 10, 11 or 12 is characterized in that each diode laser is a horizontal emitting laser, and for each diode laser, T, the device includes a reflecting element for reflecting a light beam from an associated polar laser onto an action plane. 21 · If the input device of the scope of patent application No. 9, 10, 11 or 12, it is characterized in that it is composed of a base, in which at least one diode laser and related detectors are installed, a cover element is fixed The base includes a window and a lens suitable for the cover element. 22. The input device according to claim 21, wherein the lens is integrated in a cover element having an inner surface, wherein the inner surface is curved toward the base. 2 3. The input device according to item 21 of the patent application, wherein the base, the cover element, and the lens are made of a plastic material. 2 4 · If the input device in the scope of patent application No. 9, 10, 11 or 12 is characterized in that each diode laser is coupled to the entrance end of a different light conductor, the exit end is located at The window of the device. 25. The input device as claimed in claim 24, characterized in that the light guide is an optical fiber. 26. The input device according to item 24 of the scope of patent application, which is characterized in that it includes 3 diode lasers and 3 light guides, and the exit ends of the light guides are substantially 120. One of them is spaced from each other at an angle and arranged in a circle. 2 7 · A mouse for a desktop computer ’which contains the national patent (CNS) A4 specification (210 χ 297) 579484 VI. Input device with patent scope 9, 10, 11 or 12 items. 28. A keyboard for a desktop computer, in which input devices such as patent application items 9, 10, 11 or 12 are integrated into the keyboard. 2 9 · —A laptop computer, in which the input device such as the scope of patent application No. 9, i i i 戋 12 is integrated in the laptop computer. 3 0 · — A display in which an input device such as the scope of patent application No. 9, 10, 丨 丨 or 丨 2 is integrated in the display. 31. A type of ultrasonic diagnostic device, in which at least one input device such as the scope of patent application No. 9, 10, 11 or 12 is integrated into the ultrasonic diagnostic device. ^ 3 2-A hand-held scanner device, at least one of which is an input device such as the scope of patent application No. 9, 10, 11 or 12 is integrated into the hand-held scanner device. 3 3-A remote control unit, at least one of which is an input device such as the scope of patent application No. 9, 丄 〇, 11 or 12 is integrated in the remote control unit. This paper size applies to China National Standard (CNS) A4 (210X 297 mm)